Click on map to open large map in new window (Map updated: 11 August 2009)

Click here to view an interactive map of the Northern Ireland dataset as currently collated by CEDaR.The map is generated through the NBN Gateway using their Interactive Mapping Tool.

The thallus of H. spodomela consists of a scurfy-granular mixture of algal and jelly-like cyanobacterial cells giving the whole a dirty-black appearance. Discs (0.3-0.6mm diam.) are dark brown to black with a grey rim (exciple) speckled with a blackish deposit. The disc epithecium is a dull olive green. Its habitat is base-enriched siliceous rock, especially granite, near the coast. In Ireland, it has been recorded from Counties Galway and Kerry.